2 channel amp and outdoor speakers with Marantz SR8000

I am running Marantz SR8000 and energy encore speakers inside. I would like to use the multiroom function and buy an amp to run 2 outdoor speakers and later down the line 2 speakers elsewhere in the home. Any suggestions. Would like to stay under $1000 for amp and 2 outdoor speakers

From Johan's jandr.com link, get the audio source amp two for ~ $269, not the amp one...the amp two has auto-turn on/off.
Call the guys atwww.6ave.com, they are blowing out the NHT white Outdoor One at $188/pair (retail $400).